Fools were out and about this week in an investing world jampacked with actions and ideas. Here are three articles you might find useful as you decide how to invest your money.

Profit From the United States of Diabetes
One person's misfortune is another's opportunity, right? Fool contributor Brian Orelli helped Fools answer the question of how they can profit from the diabetes "epidemic." Given the link between weight and Type 2 diabetes, weight-loss companies such as Weight Watchers International (NYSE: WTW), NutriSystem, and Medifast (NYSE: MED) could profit.

But "[a]ssuming Americans aren't going to shed the pounds, that pretty much leaves treatments as the only option," Brian wrote. "And since there's no cure for diabetes, it's pretty much a lifelong treatment. Cha-ching!"

Read the article for Brian's analysis of companies that could benefit from an increasing number of diabetics, including Merck, Amylin Pharmaceuticals (Nasdaq: AMLN), Novo Nordisk (NYSE: NVO), and MannKind.

This Company Is Unbeatable
A moat is a good thing if you own the castle it surrounds. In the investing world, a strong moat keeps competitors at bay. Fool editor and writer Dan Dzombak points out, however, that not all moats are created equal, and he goes on to present five companies "that have serious long-term dominance potential."

Sirius XM Radio (Nasdaq: SIRI) makes the list. "While the company has some issues from its high debt load, the benefit of being the only game in town when it comes to satellite radio should more than outweigh this," Dan wrote. Meanwhile, Coca-Cola (NYSE: KO) has "a formidable emotional relationship with consumers."

Check out the article to see the other three companies on Dan's list and to read about their moats.

Is Ford Motor Making You Any Cash?
Every day, Fool Seth Jayson helps investors understand that "all cash flow is not created equal" by taking a look at individual companies' finances; there are color charts for those who like to see what's being talked about. "When you are trying to buy the market's best stocks, it's worth checking up on your companies' free cash flow once a quarter or so, to see whether it bears any relationship to the net income in the headlines," Seth writes.

See the article to get the lowdown on Ford (NYSE: F), and come back to every day to see which companies Seth is looking into.

See a stock in this story you'd like to follow? Add it to My Watchlist, which will find all of our Foolish analysis on it.

Fool online editor Kris Eddy owns no shares of any stocks mentioned in this article.

Coca-Cola and Weight Watchers International are Motley Fool Inside Value picks. Ford Motor is a Motley Fool Stock Advisor recommendation. The Fool owns shares of Coca-Cola, which is also a Motley Fool Income Investor recommendation. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.